Abstract: A quick-change system for power feed and positive feed drill motors having quick-change capabilities whereby a nosepiece may be separated from the drill motor employing a quick-release coupling that does not utilize threaded means. The quick-change system utilizes a quick-change nosepiece, chuck and shank adapter means such that the oil line to a fluid inducer remains attached during nosepiece removal.

Abstract: A workpiece drilling machine includes to be moved to any of several drilling locations along the workpiece. A plurality of indexing detents is formed along the rail coinciding with each drilling location. A cam follower on the drill carriage is engageable with the detents to coarsely position the drill carriage. An index-cancelling device is associated with each detent and controllable by a preprogrammed input device to determine which of the detents is to be available for engagement by the cam follower. The programmed input device has a visual marking thereon corresponding to the information encoded therein and a visually perceptible status readout is controlled by the index-cancelling means to permit visual verification that the index-cancelling devices are arranged in accordance with the desired pattern.

Abstract: A method and machine for making a quick change drill assembly that can be snapped into and out of a spring-loaded ball-locking chuck. The assemblies are comprised of standard sized adapters having various sized bores to receive drills having shanks of corresponding interference-fit diameters. Adapters and drills are fed from opposite ends of the machine to positions from which they are interference fit and automatically discharged. The adapters are fed into a storage tube from a feeder bowl and in the storage tube they are selected or rejected according to the direction of the bore. Selected adapters are air driven to a magazine in a retracted position and from which it is movable to a supplying position. In the supplying position the individual adapter is forced into a radially biasing collet in a hydraulic press.